Malicious PDF — malware analysis report

Static analysis result for SHA-256 ec27d91bcd0de172…

MALICIOUS

PDF

65.3 KB Created: 2020-12-18 04:15:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 934e03a1705729e983efc5a747d293b4 SHA-1: 1242798d1f92334f3e6fa2abd19ca298feb7ebe5 SHA-256: ec27d91bcd0de172f7a7fdc87b92cb3094fb0533ae9fdbd0ffe39aca98dd52c3
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://gettraff.ru/123?utm_term=el+hombre+que+conocia+el+infinito+pelicula'. This indicates the document's primary purpose is to lure the user to a potentially harmful website. While no scripts were explicitly extracted, the PDF structure and the malicious URL strongly suggest an attempt to deliver a malicious payload or phish for credentials.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://gettraff.ru/123?utm_term=el+hombre+que+conocia+el+infinito+pelicula
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf4abfcb3e0f577145a96d/1606372032002/run_chrome_in_safe_mode_windows_10.pdf
    • https://static1.squarespace.com/static/5fc4fbdee5c7695ca9b5b589/t/5fc7b2059dfc2a4045292107/1606922757773/67315235228.pdf
    • https://static1.squarespace.com/static/5fc0e08512facd59ceacd9cd/t/5fc30f453c02f22b9d71dc6a/1606618952943/17699167691.pdf
    • https://uploads.strikinglycdn.com/files/c563129b-71f2-4747-95d2-26c5cef1835d/the_art_of_covert_hypnosis_free.pdf
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbdfe191972c46e3c657270/1606286873413/segment_addition_postulate.pdf
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbcf28a45ca4f7902651baf/1606218379798/minecraft_wiki_commands_weather.pdf
    • https://static1.squarespace.com/static/5fc53b031c8c7413144e61dc/t/5fce9f47c9e0980240234c3d/1607376712179/31326356121.pdf
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbe1e00e6d49a06bb59f7f7/1606295041836/split_toe_shoes_parkour.pdf
    • https://static1.squarespace.com/static/5fc30fa5bda9c57a97cc46e9/t/5fc86a6513de6e79815a242f/1606969959346/bandi_saroj_kumar_wiki.pdf
    • https://static1.squarespace.com/static/5fc4c46cc89e1c4b8fd75f72/t/5fc779fea038a451bcef2476/1606908414740/motorcycle_trailer_for_sale.pdf
    • https://static1.squarespace.com/static/5fc0f186bda9c57a97be6d6b/t/5fc1d7004f98375720235032/1606539010195/mutations_worksheet_deletion_insertion_and_substitution_sickle_cell_anemia.pdf
    • https://static1.squarespace.com/static/5fc2c9dcbf71053ccb1c52c0/t/5fcda4c09aa2de0c64b00876/1607312577358/35365359292.pdf
    • https://static1.squarespace.com/static/5fce39cd98f154499f361b13/t/5fd13f07e09a1e6e1d979a39/1607548680418/12130236160.pdf
    • https://static1.squarespace.com/static/5fc0e335a5bc066edfa5a857/t/5fc3f819eaf37e3b64171bae/1606678554207/pujafuxenosozukikada.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c037.bin
e2883125869da462e4d56007273af2e7ea5c7ee9a2c8ac17bc6fc8970da5ac44		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC037 5300 bytes
font_01_sfnt_off0000d218.bin
cc9f402b7228908a4d1d0529af27739f227b3a0bdd8b4bd7953de2bfbac3bd3e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD218 11072 bytes

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